An essential part of the racket is that the Government has granted big pharma a specific "lawful" exemption from all liabilities for this experimental procedure - and then has "mandated" Federal employees to accept the procedure.
Government has also encouraged big corporations of every sort to "mandate" the experimental procedure as a condition of employment. And those corporations have enthusiastically cooperated.
The Courts have offered weak opposition, and in the case of healthcare workers, have acquiesced to the Executive orders. Basically, every company that accepts Federal contracts will be forced to eventually comply.
This is a mockery of "law" and lawsuits will not settle the conflict. Other means will be used.
As the "All-cause" mortality rates continue to climb, the insurance companies may attempt to protect themselves by not paying claims. That will make them very inviting targets.
Deaths of a large percent of the population tend to make the surviving relatives and friends very angry. Government has every incentive to deflect the wrath of the population towards groups other than Government.
In a Rule-of-Law", the insurance companies might be considered innocent of wrongdoing, should they deny claims, and raise rates. The mRNA treatment is, as you point out, an experimental procedure with considerable, and unknown risks. Perhaps voiding a life-insurance policy might be considered legitimate, even if the patient was coerced into accepting the treatment. I don't personally accept that premise.
But we no longer have a "Rule-of-Law" to settle these conflicts.
But again, why is any of this the fault of insurance companies?. Prove there was an unholy menage de’ trois when insurance companies were involved in forcing the vax with big pharma and big buisness, hey fine. I right there with you. But the shot was a voluntary choice. Many people quit over this, and any job that forces me to inject myself is a job I quit. The companies forced them illegally, so they are liable, period. Mine was going to force the vax on us, ut thankfully the lawyer said that the deadline would be in February. Once SCOTUS ruled, they dropped it. Remember this was a mandate, not federal law.